Operating System: (Note: might work with other versions of this os.)
Webmanage uses this binary file to upgrade the AP128 to the latest firmware. This file will upgrade both the system and boot images of the unit.
Go to Webmanage, select Maintenance, Update and then this file (AP128_1.8.3_binary_download.exe)
After the process is completed, select Restart to begin using the updated version.